This is a well know SQL injection attack, it's hit thousands.
Just enter "DECLARE%20@" into google or EE.
http://web-robot-abuse.blogspot.com/2008/08/latest-hack-running-right-now-is.html
http://www.experts-exchange.com/Software/Server_Software/Web_Servers/ColdFusion/Q_23633558.html

This doesn't look like a targeted attack on your site - those would not normally generate 404 errors. This is probably the work of a script kiddie who is searching thousands of sites for one he can take over.

Recently while working on a project I got a very annoying cfdocument has no body error message. I had never seen this error before. So I checked the code.
The code was pretty simple; it was Just showing me the cfdocumnt tag and inside that tag a …

Illustrator's Shape Builder tool will let you combine shapes visually and interactively. This video shows the Mac version, but the tool works the same way in Windows. To follow along with this video, you can draw your own shapes or download the file…

This video shows how to remove a single email address from the Outlook 2010 Auto Suggestion memory.
NOTE: For Outlook 2016 and 2013 perform the exact same steps.
Open a new email: Click the New email button in Outlook.
Start typing the address: …